Heat the oven to 300°F with the rack in the middle position. Line a rimmed baking sheet (a half sheet size or bigger) with parchment paper and set aside.
While the oven is heating up, make the spice blend coating. In a small bowl, stir together the coconut sugar, lime zest, salt, garlic powder, smoked paprika, and cayenne pepper.
In a large bowl, beat the egg white and lime juice together until frothy.
Add the coconut sugar, spice, and salt blend to the frothy egg white mixture and whisk well to combine.
Pour the mixed nuts into the bowl of the seasoned egg whites. Use a spatula or wooden spoon to toss the nuts and coat them well with the sauce.
Pour the entire bowl onto the lined baking sheet and spread the spiced nuts in a single layer. (Extra sauce at the bottom of the bowl? Toss in more nuts! Don't pour in all the extra sauce into the pan because the sauce can pool at the bottom of the pan and stick.)
Pop the tray in the oven and bake for 25-30 minutes, or until lightly toasted and you can smell the fragrant seasonings. Be careful not to overcook the nuts—you don’t want them to burn. And remember: they’ll continue to crisp after you take the tray out of the oven.
Cool the nuts completely and enjoy!
